EP2980978A1 - Dispositif de conversion de puissance électrique - Google Patents

Dispositif de conversion de puissance électrique Download PDF

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Publication number
EP2980978A1
EP2980978A1 EP13880091.7A EP13880091A EP2980978A1 EP 2980978 A1 EP2980978 A1 EP 2980978A1 EP 13880091 A EP13880091 A EP 13880091A EP 2980978 A1 EP2980978 A1 EP 2980978A1
Authority
EP
European Patent Office
Prior art keywords
phase
power supply
voltage
state data
main circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP13880091.7A
Other languages
German (de)
English (en)
Other versions
EP2980978A4 (fr
Inventor
Shiori MASUYAMA
Masanori Kurita
Shunsuke Matsunaga
Koumei MOULI
Nobuhisa Maeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Industrial Equipment Systems Co Ltd
Original Assignee
Hitachi Industrial Equipment Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Industrial Equipment Systems Co Ltd filed Critical Hitachi Industrial Equipment Systems Co Ltd
Publication of EP2980978A1 publication Critical patent/EP2980978A1/fr
Publication of EP2980978A4 publication Critical patent/EP2980978A4/fr
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
    • H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/18—Indicating phase sequence; Indicating synchronism
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/097—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against wrong direction of rotation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/02—Details of starting control
    • H02P1/022—Security devices, e.g. correct phase sequencing

Definitions

  • the present invention relates to an electric power conversion device.
  • JP-A-10-248260 is disclosed. In this publication, described is "a zero-crossing point of a phase voltage detection signal for the other one phase except a current detection signal for two phases is detected and magnitudes of the current detection signals for the two phases are compared, and thereby whether connection is normal or abnormal is determined.”
  • PATENT LITERATURE 1 JP-A-10-248260
  • miswiring can be detected in the case of a wrong order of two lines; however, the miswiring cannot be detected in the case in which a phase order is correct such as in the case in which three phases deviate.
  • a method for detecting an input current for a capacitor input and determining a phase is used; however, in the case of this method, when a microcomputer and a detection circuit do not rise up at the time of power-on, the detection cannot be performed, and therefore it is necessary to turn on power of a main circuit unit after a power supply for control is turned on separately.
  • an electric power conversion device includes a state data detection unit that detects state data (current, voltage) input to a regenerative converter from a three-phase power supply during switching of a main circuit terminal, a comparison unit that compares the state data detected by the state data detection unit and a predetermined threshold, and a determination unit that determines a wiring state between the three-phase power supply entering a main circuit and the three-phase power supply entering a phase detection circuit on the basis of comparison results from the comparison unit.
  • state data detection unit that detects state data (current, voltage) input to a regenerative converter from a three-phase power supply during switching of a main circuit terminal
  • a comparison unit that compares the state data detected by the state data detection unit and a predetermined threshold
  • a determination unit that determines a wiring state between the three-phase power supply entering a main circuit and the three-phase power supply entering a phase detection circuit on the basis of comparison results from the comparison unit.
  • an electric power conversion device that is capable of confirming a phase at a power start-up without newly providing a circuit and thereby confirming whether wiring is normal or missing without causing an actual machine to perform a regenerative operation.
  • miswiring a function of detecting missing in wiring (hereinafter, miswiring) by detecting a three-phase current
  • FIG. 1 illustrates an example of a configuration diagram of a power supply regenerative device of the present embodiment.
  • FIG. 1 a connection configuration and operations of a 120-degree conduction regenerative converter 100 (hereinafter, a regenerative converter) and an inverter for motor control 2 (hereinafter, an inverter) will be described.
  • an AC side of the regenerative converter 100 is connected to a three-phase AC power supply 1 (hereinafter, a power supply) via an AC reactor 4.
  • the AC side of the regenerative converter 100 may be connected to the power supply 1 via a reactor, a transformer filter, or the like.
  • a main circuit DC unit 107 on a DC side of a main circuit element 200 is connected to a DC unit of the inverter 2 that controls a motor 3.
  • an AC side of the inverter 2 is connected to the power supply 1.
  • the main circuit DC unit 107 holds DC power and is connected to the inverter.
  • a voltage of the power supply 1 is converted into an appropriate voltage by a voltage dividing resistor, a phase detecting transformer, or the like, and then is input to an A/D converter to detect a power supply voltage amplitude.
  • This power supply voltage amplitude signal is input to a switching control unit 106.
  • a current detector 104 detects a current of a main circuit connected to an AC reactor 4. A value thereof is output to the switching control unit 106.
  • a PN-voltage detection circuit 108 detects a voltage value of an electrolytic capacitor included in the main circuit DC unit 107. The value is output to the switching control unit 106.
  • the power supply voltage amplitude, a current signal, and a DC voltage signal are input.
  • the power supply voltage amplitude and the DC voltage are compared to thereby determine whether or not there is a regenerative state, and when the motor is in the regenerative state, a GS release signal is output.
  • the main circuit element 200 is switched.
  • phase pulse signal generation circuit 102 a voltage of the power supply 1 is input, and the phase pulse signal generation circuit 102 outputs a phase pulse signal synchronized with the voltage.
  • phase pulse signal is input, and the phase detection circuit 101 performs PLL processing and generates a power supply phase signal.
  • the gate pulse waveform generation processing 105 the power supply phase signal is input and the gate pulse waveform generation processing 105 generates six gate pulse waveforms.
  • an output from a phase detecting transformer or the like may be used.
  • FIG. 2 A relationship between the power supply phase signal and the gate pulse signal is illustrated in FIG. 2 .
  • a reference of the phase is arbitrary.
  • the gate pulse signal changes switching of six main circuit elements (R phase upper side 201, S phase upper side 202, T phase upper side 203, R phase lower side 204, S phase lower side 205, and T phase lower side 206 (see FIG. 3 )) included in the main circuit element 200 in accordance with an angle of a power supply phase.
  • R, S, and T terminals connected to the main circuit element 200 and R1, S1, and T1 terminals connected to the phase pulse signal generation circuit 102 are used as terminals on the AC side of the regenerative converter.
  • the R1, S1, and T1 terminals are connected directly to the power supply 1, and on the other hand, the R, S, and T terminals are connected to the power supply 1 via the reactor.
  • this reactor is not stored in the same chassis and is installed separately, and therefore the above-described wiring is performed on the user side.
  • FIG. 4 illustrates appropriate wiring (hereinafter, normal wiring), and on the other hand, the miswiring described at the front of the present embodiment indicates a case in which an order of the R, S, and T terminals connected to the main circuit element 200 and that of the R1, S1, and T1 terminals connected to the phase pulse signal generation circuit 102 are different with each other and the wiring is performed. It is impossible to perform a normal operation in this state.
  • V R V cos ⁇
  • V S V ⁇ cos ⁇ - 120
  • V T V ⁇ cos ⁇ - 120
  • V R represents a phase voltage of the R phase
  • V S represents a phase voltage of the S phase
  • V T represents a phase voltage of the T phase.
  • V dc 2 ⁇ V ac
  • a voltage applied to the reactors is considered.
  • an upper arm and a lower arm are turned ON one by one in an arbitrary phase, respectively.
  • a phase in which the upper arm is turned ON is a phase in which a voltage is highest
  • a phase in which the lower arm is turned ON is a phase in which a voltage is lowest.
  • V1 is a voltage of the phase in which the upper arm is turned ON
  • V2 is a voltage of the phase in which the lower arm is turned ON.
  • phases ⁇ are 30, 90, 150, 210, 270, and 330 degrees.
  • a voltage difference between V1 and V2 namely, a line voltage in the main circuit element that is turned ON is represented by MATH. 6.
  • V 1 - V 2 3 ⁇ V cos ⁇
  • V 1 - V 2 3 ⁇ V ac cos ⁇
  • a voltage ⁇ V generated in the reactor is represented by MATH. 8.
  • ⁇ ⁇ V V 1 - V 2 + V dc
  • ⁇ I ⁇ ⁇ V 2 ⁇ L ⁇ ⁇ T
  • the voltage ⁇ V generated in the reactor during the miswiring is calculated.
  • the phase ⁇ is set to 30 degrees.
  • a phase voltage of the R phase is applied to V1 and a phase voltage of the T phase is applied to V2; here, the S phase and the T phase are considered inversely, and therefore a phase voltage of the S phase is applied to V2.
  • the voltage ⁇ V generated here is obtained from MATH. 8, and when a power supply voltage is 200V, a voltage of approximately 140V is generated.
  • the current ⁇ I flowing at this time is obtained from MATH. 10.
  • the conditions include that rectification to a DC voltage is performed, a CT offset is finished, the PLL converges for a phase detection, and the like. Determination of the rectified voltage can be performed by comparing the power supply voltage amplitude and the DC voltage. If the conditions are not satisfied, a confirmation is repeated until the conditions are satisfied after a shorter standby time.
  • a phase appropriate to an output of the gate pulse signal is performed. If the phase is not appropriate, waiting of a shorter time is performed to repeat the confirmation from a first condition. Relating to a phase angle ⁇ to be detected, a current flowing in three phases becomes approximately zero, and therefore an angle such that a voltage of any one phase of the three phases becomes 0V is appropriate to the detection.
  • the angles are six angles of 30, 90, 150, 210, 270, and 330 degrees. Therefore, the detection is performed by a phase having a value that an angle difference ⁇ is small as far as possible is recommended. However, since the detection cannot be always accurately performed by the above-described six phases, a gate can be opened in a phase that deviates in some degrees by adjusting the threshold.
  • the gate pulse signal is output and the output is stopped after a fixed time has passed. Since a current value is proportional to a time at which this gate pulse signal is output, the time is determined on the basis of a current detection accuracy or an overcurrent level. Thereafter, a current near to a peak value is detected. As illustrated in table 1, a current becomes approximately zero in the case of the normal wiring, and on the other hand, the current flows during the miswiring. Accordingly, depending on whether an appropriate threshold is determined and the current value is equal to or greater than the threshold, it is possible to perform determination whether the wiring is normal or missing.
  • the threshold is determined in accordance with ⁇ V, ⁇ T, or L. For example, as an L value of the reactor is greater, a value of a flowing current decreases, and therefore the threshold can be decreased. Further, for example, since ⁇ V during the miswiring is proportional to the power supply voltage, the threshold can be determined depending on the power supply voltage.
  • the flowing current is calculated by MATH. 10, but the detected current values include errors of various detectors.
  • the voltage difference of table 1 is considered on the basis of the circuit of FIG. 5 ; however, a current to the connected inverter or the like is also generated, and therefore the voltage difference of table 1 deviates from a value calculated by MATH. 10.
  • a method for using a plurality of phases, performing a determination, and the like is effective.
  • the time to output the gate pulse signal is adjusted, and thereby the miswiring can be detected on the premise that a current is limited to a safe level. Therefore, abnormal operations or breakage of the main circuit element to be switched can be prevented.
  • detection of the miswiring is performed before the operation, and thereby an alarm can be issued more safely than that at the start of the operation.
  • a phase to be switched in the main circuit element is a phase in which the three-phase AC voltage is not zero.
  • a phase in which a voltage value is a positive value switches an element on the upper side of the main circuit element, and a phase in which the voltage value is a negative value switches an element on the lower side thereof.
  • the S phase and the T phase are wired inversely to the AC side of the main circuit element 200. Therefore, instead of switching the main circuit element on the lower side of the T phase, the main circuit element on the lower side of the S phase to which a voltage of the T phase is applied is switched, and thereby the switching can be performed in accordance with the actual wiring.
  • a gate pulse signal is first output and detection of a current is performed.
  • a phase to be switched in the main circuit element is changed in accordance with the miswiring pattern (1) of table 1.
  • the gate pulse signal is also output and whether or not a current flows is confirmed.
  • the miswiring pattern (2) is adopted and also whether or not a current flows is confirmed.
  • six types of all the miswiring patterns are tried in sequence, and thereby a pattern in which no current flows, namely, the actual wiring pattern can be detected.
  • phase pulse signals (an order of this case is R1, T1, and S1) interchanged in accordance with the order of the terminals connected to the main circuit element 200 are output, and thereby the miswiring can be modified.
  • FIG. 11 is a diagram in which when the terminals connected to the phase pulse signal generation circuit 102 are set to R1, S1, and T1, the power supply phases at the time of changing the phases to be switched in the main circuit element are collected in each wiring pattern. As can be seen in FIG. 11 , a tilt of the power supply phase or a position of a zero point changes in each wiring pattern. Therefore, the power supply phase is changed in accordance with each wiring pattern, and thereby the miswiring can be modified.
  • the power supply phase may be changed so that (1) being the power supply phase in the normal wiring is the power supply phase of (3).
  • (3) is a reverse phase against a normal phase of (1)
  • the power supply phase is first reversed and then the power supply phase is advanced by 120 degrees to thereby modify the power supply phase.
  • an applicable current value may be found out from table 1 on the basis of current values obtained at a first current detection performed at the time of power-on and a pattern that is applicable to the current value may be determined.
  • a phase detection circuit 111 and a phase pulse signal generation circuit 112 are first provided on the AC side of the main circuit element 200. These circuits perform the same processing as that of the phase detection circuit 101 and the phase pulse signal generation circuit 102 described in the first embodiment. Accordingly, the power supply phase signals output by the phase detection circuit 101 and the phase detection circuit 111 are compared with each other, and thereby it is possible to perform determination that if the power supply phase signals are the same, there is the normal wiring, whereas if the power supply phase signals are different, there is the miswiring.
  • a power supply regenerative device that is capable of confirming phases at a power start-up, detecting all the miswiring, and notifying users of correct wiring phases regardless of startup timing of the power supply for control.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Inverter Devices (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
EP13880091.7A 2013-03-29 2013-12-18 Dispositif de conversion de puissance électrique Ceased EP2980978A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013070975A JP6037913B2 (ja) 2013-03-29 2013-03-29 電力変換装置
PCT/JP2013/083816 WO2014155864A1 (fr) 2013-03-29 2013-12-18 Dispositif de conversion de puissance électrique

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Publication Number Publication Date
EP2980978A1 true EP2980978A1 (fr) 2016-02-03
EP2980978A4 EP2980978A4 (fr) 2017-02-15

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EP13880091.7A Ceased EP2980978A4 (fr) 2013-03-29 2013-12-18 Dispositif de conversion de puissance électrique

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EP (1) EP2980978A4 (fr)
JP (1) JP6037913B2 (fr)
CN (1) CN105075084B (fr)
WO (1) WO2014155864A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6532099B2 (ja) * 2014-10-17 2019-06-19 三菱重工業株式会社 電流推定回路、ａｃ−ｄｃコンバータ、電力制御装置、電流推定方法及びプログラム
WO2021177193A1 (fr) 2020-03-02 2021-09-10 株式会社日立産機システム Dispositif de conversion de puissance
CN116325470A (zh) * 2020-10-26 2023-06-23 发那科株式会社 具有配线状态检测部的转换器以及电动机驱动装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398867B (de) * 1989-12-12 1995-02-27 Siemens Ag Oesterreich Schaltungsanordnung zur bestimmung der phasenlage von unterschiedlichen versorgungsspannungen, insbesondere für netzgeführte stromrichter
JP2797882B2 (ja) * 1993-03-12 1998-09-17 三菱電機株式会社 サーボモータの制御装置
JP3547204B2 (ja) * 1995-03-13 2004-07-28 株式会社日立産機システム コンバータ装置
JPH08289466A (ja) * 1995-04-17 1996-11-01 Sanyo Electric Co Ltd 電源誤配線検知装置
JP3625901B2 (ja) * 1995-06-30 2005-03-02 三菱電機株式会社 サーボ制御システムの自動適正化方法および装置
JP3817814B2 (ja) * 1997-03-05 2006-09-06 株式会社明電舎 主回路接続判定方法
US6066932A (en) * 1998-07-06 2000-05-23 Fetzer; Fred Motor reversal protection apparatus
KR20040034906A (ko) * 2002-10-17 2004-04-29 엘지전자 주식회사 멀티 공조기의 역상/결상 감지방법
CN2674463Y (zh) * 2004-01-16 2005-01-26 广东新的科技集团有限公司 一种相序检测控制系统
JP5331523B2 (ja) * 2009-03-12 2013-10-30 山洋電気株式会社 誤配線検出機能を備えた三相同期電動機の制御装置
JP5420484B2 (ja) * 2010-07-02 2014-02-19 株式会社日立製作所 電力変換装置のゲートパルス誤配線検出方法
JP2012249494A (ja) * 2011-05-31 2012-12-13 Hitachi Industrial Equipment Systems Co Ltd 電源回生装置
CN102739085B (zh) * 2012-06-20 2014-07-02 陕西煤业化工技术研究院有限责任公司 逆变器锁相和相序识别的方法

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Publication number Publication date
CN105075084B (zh) 2017-10-13
JP6037913B2 (ja) 2016-12-07
JP2014195375A (ja) 2014-10-09
EP2980978A4 (fr) 2017-02-15
CN105075084A (zh) 2015-11-18
WO2014155864A1 (fr) 2014-10-02

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